Device for detecting symmetry degree of rotor shaft of automobile generator and key groove of rotor shaft

Abstract

The invention relates to the technical field of automobile part detection, and discloses an automobile generator rotor shaft and key groove symmetry degree detection device, which comprises a bottom table, a first moving part and a second moving part are arranged on the bottom table, the second moving part is carried on the first moving part, and the two moving parts cooperate to realize two-dimensional displacement adjustment of the rotor shaft. A second mounting plate is arranged on the second moving part, a fixing part and a driving part are symmetrically arranged on the second mounting plate, and flexible adjustment and rapid locking of two-dimensional displacement of the rotor shaft can be achieved through cooperative cooperation of the first moving part and the second moving part and arrangement of the positioning part. The first movable bedplate and the second movable bedplate achieve left-right and front-back displacement adjustment through the sliding rail assembly, after the rotor shaft is accurately moved to the detection position, the second telescopic device of the positioning piece drives the meshing plate to be meshed with the positioning plate in a tooth shape, displacement locking is rapidly completed, position deviation in the detection process is avoided, the accuracy of shaft body symmetry degree detection is ensured, and the detection efficiency is improved. And the detection efficiency and reliability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts detection, in particular to a device for detecting the symmetry of an automobile generator rotor shaft and its keyway. Background Art

[0002] As a core component of power transmission, the geometric accuracy of an automotive generator's rotor shaft directly impacts the generator's operational stability and reliability. Axial symmetry and keyway symmetry are two key inspection criteria. Existing technology typically requires testing automotive generator rotor shafts on two separate devices: first, the rotor shaft is mounted on a keyway inspection device for keyway symmetry measurement. After this, the rotor shaft is disassembled and re-clamped on another device for rotor shaft symmetry testing.

[0003] This separate equipment testing model has significant flaws: multiple clamping makes the testing process cumbersome and inefficient, and is prone to introducing positioning deviations, affecting the accuracy of the test results; at the same time, the company needs to configure multiple sets of independent equipment, which increases equipment investment, workshop floor space and maintenance costs, and increases the complexity of equipment maintenance. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a device for detecting the symmetry of an automobile generator rotor shaft and its keyway, which can realize continuous detection of the symmetry of the rotor shaft body and the keyway on the same device, thereby reducing clamping errors and improving detection efficiency.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A device for detecting the symmetry of an automobile generator rotor shaft and its keyway, comprising a base, on which a first moving part and a second moving part are provided. The second moving part is mounted on the first moving part, and the two moving parts cooperate to achieve two-dimensional displacement adjustment of the rotor shaft. The second moving part is provided with a second mounting plate, on which a fixing component and a driving component are symmetrically provided. The fixing component is used to place and fix the rotor shaft, and the driving component is used to drive the rotor shaft to rotate. The base is provided with a detection device for detecting the axial symmetry and keyway symmetry of the rotor shaft. The second moving part is provided with a positioning component adapted to the first moving part and the second moving part, for locking the displacement positions of the first moving part and the second moving part.

[0006] Preferably, the movable part includes a slide rail assembly 1, a movable table 1 and a protective cover 1. The movable table 1 is arranged on the slide rail assembly 1 and can slide left and right. The protective cover 1 is arranged outside the slide rail assembly 1 and covers it. The slide rail assembly 1 and the protective cover 1 are both installed on the base platform. The movable part 2 includes a slide rail assembly 2, a movable table 2 and a protective cover 2. The movable table 2 is arranged on the slide rail assembly 2 and can slide back and forth. The protective cover 2 is arranged outside the slide rail assembly 2 and covers it. The slide rail assembly 2 and the protective cover 2 are both installed on the base platform. The slide rail assembly 1 and the slide rail assembly 2 can be protected from dust by the protective cover 1 and the protective cover 2. The slide rail assembly 1 and the slide rail assembly 2 are both existing well-known technical structures.

[0007] Preferably, the driving member includes a fixed base plate, an arc plate, a connecting block 1 and a connecting block 2, the fixed base plate is installed on the mounting plate 2, a telescopic device 1 is provided on the fixed base plate, a plurality of pulleys are rotatably provided on the arc plate, a transmission belt is wound around the plurality of pulleys, one of which is a pulley on the inner side of the transmission belt and is installed on the arc plate through a detection member, the connecting block 1 is movably provided on the fixed base plate and is rotatably connected to one end of the arc plate, the connecting block 2 is movably provided on the fixed base plate and can be locked with the other end of the arc plate, a connecting frame plate is provided between the connecting block 1 and the connecting block 2, the output shaft of the telescopic device 1 is connected to the connecting frame plate, a driving device is provided on the connecting block 1, the output shaft of the driving device is connected to the pulley at one end of the transmission belt, and a connecting end is provided on the arc plate.

[0008] Preferably, the fixed base plate is provided with a movable groove and a sliding groove, and a movable rod is provided under the connecting block 1 and the connecting block 2. The connecting block 1 is also provided with a sliding end, and the sliding end is provided with a connecting plate 1. The driving device is installed on the connecting plate 1, and its sliding end moves in the sliding groove. The stability of the up and down movement of the movable block 1 and the movable block 2 is ensured by the movable rod.

[0009] Preferably, the detection component includes an extrusion block, a mounting bolt and a mounting base plate, the mounting bolt passes through the extrusion block and the arc plate and is connected to the pulley, the mounting base plate is arranged on the arc plate, and a pressure sensor is provided on the mounting base plate, one side of the extrusion block is located on the mounting base plate, and a through hole is provided on the arc plate for the mounting bolt to pass through, and there is a gap between the through hole and the mounting bolt, and the gap is parallel to the mounting base plate when set, so that the mounting bolt transmits force to the pressure sensor through the extrusion block through the gap.

[0010] Preferably, the positioning member includes a telescopic device 2, a meshing plate 1, a meshing plate 2 and a limit plate. The output shaft of the telescopic device 2 is connected to a connecting member. The telescopic device 2 is arranged on a movable platform 1. The meshing plate 1 and the meshing plate 2 are symmetrically arranged. The meshing plate 1 and the meshing plate 2 are both hinged to the connecting member. The limit plate is provided with a guide end. The symmetrical sides of the meshing plate 1 and the symmetrical sides of the meshing plate 2 are both provided with limit plates. The meshing plate 1 and the meshing plate 2 are both provided with guide grooves adapted to the guide ends.

[0011] Preferably, the connecting member includes a connecting plate 2, a hinge plate 1 and a hinge plate 2, the connecting plate 2 is provided with a hinge block 1, one end of the hinge plate 1 and the hinge plate 2 are hinged to the hinge block 1, the hinge plate 1 and the hinge plate 2 are symmetrically arranged, the other ends of the hinge plate 1 and the hinge plate 2 are hinged to the meshing plate 1 and the meshing plate 2 respectively, and the horizontal linear motion of the telescopic device 2 is converted into the radial movement of the meshing plate 1 and the meshing plate 2 up and down through the connecting member.

[0012] Preferably, a positioning plate 1 is provided on the base platform, a positioning plate 2 is provided on the movable platform plate 2, both the positioning plate 1 and the positioning plate 2 are provided with an engaging tooth 1, and both the engaging plate 1 and the engaging plate 2 are provided with an engaging tooth 2 that can engage with the engaging tooth 1. By engaging the engaging plate 1 and the engaging plate 2 respectively positioning the positioning plate 2 and the positioning plate 1, the position locking of the moving part 1 and the moving part 2 can be quickly completed.

[0013] Preferably, a mounting end is provided on the movable table, and the telescopic device 1 is arranged in the mounting end. A movable hole is also provided on the movable table, and the engaging plate 1 and the engaging plate 2 on the positioning member are both in the movable hole. The telescopic device 1 is embedded in the mounting end, and the engaging plate 1 and the engaging plate 2 are engaged with the positioning plate 1 and the positioning plate 2 through the movable hole.

[0014] Preferably, the detection device further includes a controller and a control panel, the controller is connected to the drive device, telescopic device 1, telescopic device 2, pressure sensor and control panel, the telescopic device 1, telescopic device 2 and drive device are all externally powered by a relay module, the control panel is externally powered, and its controller is a controller with a memory when in use, and a value having a good contact force between the transmission belt and the rotor shaft is input into the controller in advance through the control panel, and the controller can control the closing of the relay module and then control the power supply of the drive device, telescopic device 1 and telescopic device 2, and the control panel can perform command control.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention achieves flexible adjustment and rapid locking of the two-dimensional displacement of the rotor shaft through the coordinated cooperation of the first and second moving parts and the provision of a positioning member. The first and second moving plates utilize a slide rail assembly to adjust the left-right and fore-and-aft displacements. After the rotor shaft is precisely moved to the testing position, the second telescopic device of the positioning member drives the meshing plate into toothed engagement with the positioning plate, rapidly completing the displacement locking. This prevents positional drift during testing, ensures the accuracy of shaft symmetry testing, and improves testing efficiency and reliability.

[0016] Moreover, through the linkage between the telescopic device and the pressure sensor on the driving part, it can adaptively adapt to the detection of rotor shafts of different diameters. During the detection, the pressure sensor provides real-time feedback of the contact pressure between the transmission belt and the rotor shaft. When the detection of rotor shafts of different diameters leads to insufficient pressure, the telescopic device automatically adjusts the arc plate height, increases the tension of the transmission belt, ensures that the transmission belt and the rotor shaft fit closely, stably drives the rotor shaft to rotate, realizes efficient detection of rotor shafts of different specifications, and avoids detection errors or equipment damage caused by improper pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is an exploded view of a part of the structure of the present invention; Figure 3 This is a structural view of the moving part 1 and the moving part 2 of the present invention; Figure 4 This is a view showing the position of the driving member of the present invention; Figure 5 A structural view of a driving member of the present invention; Figure 6 A position view of the telescopic device of the present invention; Figure 7 This is an exploded view of the driving member structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged view at point A in the middle; Figure 9 This is a structural view of the arc plate of the present invention; Figure 10 It is a partial cross-sectional view of the present invention; Figure 11 This is a structural view of the positioning member of the present invention; Figure 12This is an exploded view of the positioning member structure of the present invention; Figure 13 This is a view of the second position of the positioning plate of the present invention; Figure 14 A structural view of a movable platen according to the present invention; Figure 15 This is a control flow diagram of the present invention.

[0019] Explanation of the figure numbers: 1. Base; 101. Extension block; 102. Mounting plate 1; 103. Positioning plate 1; 2. Moving part 1; 21. Slide rail assembly 1; 22. Protective cover 1; 23. Moving table 1; 231. Protective block 1; 232. Mounting end; 233. Movable hole; 3. Moving part 2; 31. Slide rail assembly 2; 32. Protective cover 2; 33. Moving table 2; 331. Positioning plate 2; 332. Protective block 2; 4. Mounting plate 2; 5. Fixed parts; 6. Driving member; 61. Fixed base plate; 611. Moving groove; 612. Sliding groove; 62. Connecting block 1; 621. Sliding end; 622. Connecting plate 1; 63. Connecting block 2; 631. Moving rod; 64. Arc plate; 641. Through hole; 65. Driving device; 66. Telescopic device 1; 67. Connecting frame plate; 68. Pulley; 69. Transmission belt; 610. Detection member; 6101. Extrusion block; 6102. Mounting bolt; 6103. Mounting base plate; 7. Positioning member; 71. Telescopic device 2; 72. Connecting member; 721. Connecting plate 2; 722. Articulated block 1; 723. Articulated plate 1; 724. Articulated plate 2; 73. Engaging plate 1; 731. Engaging tooth 2; 732. Guide groove; 74. Engaging plate 2; 741. Articulated block 3; 75. Limiting plate; 76. Guide end; 8. Testing equipment; 9. Pressure sensor; 10. Relay module; 11. Controller; 12. Control panel. DETAILED DESCRIPTION

[0020] The present invention will be described in further detail below with reference to the accompanying drawings.

[0021] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0022] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate directions or positions are based on the directions or positional relationships shown in the accompanying drawings, which are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limiting the present invention.

[0023] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity. Example

[0024] See also Figure 1-15 , a device for detecting the symmetry of the rotor shaft and keyway of an automobile generator, comprising a base 1, a moving part 2 and a moving part 3 being provided on the base 1, the moving part 2 3 being mounted on the moving part 2, and the two working together to realize the two-dimensional displacement adjustment of the rotor shaft, a mounting plate 2 4 being provided on the moving part 2 3, a fixing part 5 and a driving part 6 being symmetrically provided on the mounting plate 2 4, the fixing part 5 being used to place and fix the rotor shaft, the driving part 6 being used to drive the rotor shaft to rotate, a detecting device 8 being provided on the base 1 for detecting the axial symmetry and keyway symmetry of the rotor shaft, a positioning part 7 being adapted to the moving part 2 and the moving part 2 3 being provided on the moving part 2 3 for locking the displacement position of the moving part 2 and the moving part 2 3, an extending block 101 being provided on the extending block 101, a mounting plate 102 being provided on the extending block 101, the detecting device 8 being mounted on the mounting plate 102, and the height of the detecting device 8 being increased by the mounting plate 102.

[0025] The moving part 1 includes a slide rail assembly 1 21, a moving table 1 23 and a protective cover 1 22. The moving table 1 23 is arranged on the slide rail assembly 1 21 and can slide left and right. The protective cover 1 22 is arranged outside the slide rail assembly 1 21 and covers it. The slide rail assembly 1 21 and the protective cover 1 22 are both installed on the base 1. The moving part 2 includes a slide rail assembly 2 31, a moving table 2 33 and a protective cover 2 32. The moving table 2 33 is arranged on the slide rail assembly 2 31 and can slide forward and backward. The protective cover 2 32 is arranged outside the slide rail assembly 2 31 and covers it. The slide rail assembly 2 31 and the protective cover 2 3 2 are both installed on the base 1, and the protective cover 1 22 and the protective cover 2 32 can provide dust protection for the slide rail assembly 1 21 and the slide rail assembly 2 31. The slide rail assembly 1 21 and the slide rail assembly 2 31 are both existing well-known technical structures, wherein a protective block 1 231 is further provided under the movable table 1 23, and a protective block 2 332 is provided under the movable table 2 33. The protective block 1 231 and the protective block 2 332 can block and protect the areas that the protective cover 1 22 and the protective cover 2 32 cannot cover, thereby providing sufficient protection for the slide rail assembly 1 21 and the slide rail assembly 2 31.

[0026] The driving member 6 includes a fixed base plate 61, an arc plate 64, a connecting block 1 62 and a connecting block 2 63. The fixed base plate 61 is installed on the mounting plate 2 4. A telescopic device 1 66 is provided on the fixed base plate 61. A plurality of pulleys 68 are rotatably provided on the arc plate 64. A transmission belt 69 is wound around the plurality of pulleys 68. One of the pulleys 68 on the inner side of the transmission belt 69 is installed on the arc plate 64 through a detection member 610. The connecting block 1 62 is movably provided on the fixed base plate 61 and is rotatably connected to one end of the arc plate 64. The connecting block 2 63 is movably provided on the fixed base plate 61 and can be locked with the other end of the arc plate 64. A connecting frame plate 67 is provided between the connecting block 1 62 and the connecting block 2 63. The output shaft of the telescopic device 1 66 is connected to the connecting frame plate 67. A driving device 65 is provided on the connecting block 1 62. The output shaft of the driving device 65 is connected to the pulley 68 at one end of the transmission belt 69. A connecting end is provided on the arc plate 64.

[0027] The fixed base plate 61 is provided with a movable groove 611 and a sliding groove 612. A movable rod 631 is provided under the connecting block 1 62 and the connecting block 2 63. The connecting block 1 62 is also provided with a sliding end 621. The sliding end 621 is provided with a connecting plate 1 622. The driving device 65 is installed on the connecting plate 1 622, and its sliding end 621 is movable in the sliding groove 612. The stability of the up and down movement of the movable block 1 and the movable block 2 is ensured by the movable rod 631.

[0028] The detection part 610 includes an extrusion block 6101, a mounting bolt 6102 and a mounting base plate 6103. The mounting bolt 6102 passes through the extrusion block 6101 and the arc plate 64 and is connected to the pulley 68. The mounting base plate 6103 is arranged on the arc plate 64. The mounting base plate 6103 is provided with a pressure sensor 9. One side of the extrusion block 6101 is on the mounting base plate 6103. The arc plate 64 is provided with a through hole 641 for the mounting bolt 6102 to pass through. There is a gap between the through hole 641 and the mounting bolt 6102. The gap is set to a side parallel to the mounting base plate 6103. Through the gap, the mounting bolt 6102 transmits force to the pressure sensor 9 through the extrusion block 6101.

[0029] The positioning member 7 includes a telescopic device 2 71, an engaging plate 1 73, an engaging plate 2 74 and a limit plate 75. The output shaft of the telescopic device 2 71 is connected to a connecting member 72. The telescopic device 2 71 is arranged on a movable table 1 23. The engaging plate 1 73 and the engaging plate 2 74 are symmetrically arranged. The engaging plate 1 73 and the engaging plate 2 74 are both hinged to the connecting member 72. A guide end 76 is provided on the limit plate 75. The symmetrical sides of the engaging plate 1 73 and the symmetrical sides of the engaging plate 2 74 are both provided with limit plates 75. The engaging plate 1 73 and the engaging plate 2 74 are both provided with guide grooves 732 adapted to the guide ends 76.

[0030] The connecting member 72 includes a connecting plate 2 721, a hinge plate 1 723 and a hinge plate 2 724. The connecting plate 2 721 is provided with a hinge block 1 722. One end of the hinge plate 1 723 and the hinge plate 2 724 are hinged to the hinge block 1 722. The hinge plate 1 723 and the hinge plate 2 724 are symmetrically arranged. The other ends of the hinge plate 1 723 and the hinge plate 2 724 are hinged to the meshing plate 1 73 and the meshing plate 2 74 respectively. The horizontal linear motion of the telescopic device 2 71 is converted into radial movement of the meshing plate 1 73 and the meshing plate 2 74 up and down through the connecting member 72. The meshing plate 1 73 is provided with a hinge block 2, and the meshing plate 2 74 is provided with a hinge block 3 741. The hinge plate 1 723 is hinged to the hinge block 2 on the meshing plate 1 73, and the hinge plate 2 724 is hinged to the hinge block 3 741 on the meshing plate 2 74.

[0031] A positioning plate 103 is provided on the base 1, and a positioning plate 2 331 is provided on the movable table plate 2 33. Both the positioning plate 103 and the positioning plate 2 331 are provided with an engaging tooth 1. Both the engaging plate 1 73 and the engaging plate 2 74 are provided with an engaging tooth 2 731 that can engage with the engaging tooth 1. By engaging the engaging plate 1 73 and the engaging plate 2 74 respectively, the positioning plate 2 331 and the positioning plate 103 are engaged, and the position locking of the movable part 1 2 and the movable part 2 3 can be quickly completed.

[0032] A mounting end 232 is provided on the movable table, and a telescopic device 66 is provided in the mounting end 232. A movable hole 233 is also provided on the movable table, and the engaging plate 1 73 and the engaging plate 2 74 on the positioning member 7 are both in the movable hole 233. The telescopic device 66 is embedded in the mounting end 232, and the engaging plate 1 73 and the engaging plate 2 are engaged with the positioning plate 1 103 and the positioning plate 2 331 through the movable hole 233.

[0033] It also includes a controller 11 and a control panel 12 provided on the detection device. The controller 11 is connected to the drive device 65, telescopic device 1 66, telescopic device 2 71, pressure sensor 9 and control panel 12. Telescopic device 1 66, telescopic device 2 71 and drive device 65 are all externally powered by the relay module 10, and the control panel 12 is externally powered. The controller 11 is a controller 11 with a memory when in use. The numerical value of the better contact force between the transmission belt 69 and the rotor shaft is input into the controller 11 in advance through the control panel 12. The controller 11 can control the closing of the relay module 10 and then control the power supply of the drive device 65, telescopic device 1 66 and telescopic device 2 71. The control panel 12 can perform command control.

[0034] In actual production, this detection device is installed in a designated location in the workshop to ensure that the base 1 is placed firmly. When the rotor shaft of the automobile generator needs to be inspected, the operator first inserts the plug into the keyway of the rotor shaft, and then places the rotor shaft on the fixing component 5 of the mounting plate 2 4. The fixing component 5 can be an existing publicly disclosed structure for fixing the rotor shaft (no further description will be given here). After the rotor shaft is fixed by the fixing component 5, the mounting plate 2 4 can be moved manually. The mounting plate 2 4 can be adjusted in two dimensions by the moving part 1 2 and the moving part 2 3, so as to move the plug to the position of the detection device 8. The detection device 8 is a prior art. The detection end on the detection device 8 contacts the plug, and then the mounting plate 2 4 is moved so that the detection end on the detection device 8 moves on the plug for detection. After completing the keyway symmetry test, the rotor shaft itself is tested for axial symmetry. The plug is removed, and then the mounting plate 2 4 is moved to move the rotor shaft to the point where it needs to be tested and in contact with the detection end of the detection device 8. Then, a command is sent to the controller 11 through the control panel. The controller 11 controls the output shaft of the telescopic device 2 71 to extend, push the connecting plate 2 721 of the connecting member 72, and rotate the hinge plate 1 723 and the hinge plate 2 724 outward. The hinge plate 1 723 and the hinge Plate 2 724 pushes meshing plate 1 73 and meshing plate 2 74 respectively, meshing plate 1 73 moves toward positioning plate 2 331, and meshing plate 2 74 moves toward positioning plate 1 103, until the meshing teeth 2 731 on meshing plate 1 73 and meshing plate 2 74 respectively mesh with the meshing teeth 1 on positioning plate 1 103 and positioning plate 2 331, thereby achieving displacement locking of moving part 1 2 and moving part 2 3, and then rotating arc plate 64 to close, so that the connecting end on arc plate 64 is aligned with connecting block 1. 62 is locked, and its transmission belt 69 is pressed on the rotor shaft. After the transmission belt 69 is pressed on the rotor shaft, it will be tightened. The pulley 68 located on the inner side of the transmission belt 69 transmits the pressure of the transmission belt 69 to the pressure sensor 9 through the detection part 610. The mounting bolt 6102 of the detection part 610 passes through the extrusion block 6101 and the arc plate 64 and is connected to the pulley 68. One side of the extrusion block 6101 presses on the pressure sensor 9 on the mounting base 6103. The pressure sensor 9 detects the pressure value in real time and transmits the data to the controller 11. If the pressure value is small, the controller 11 controls the telescopic device 66 to continue to move downward, increasing the force of the transmission belt 69 pressing on the rotor shaft until the pressure value reaches the appropriate range. After the pressure is adjusted to be appropriate, the controller 11 starts the driving device 65. The output shaft of the driving device 65 drives the pulley 68 connected to one end of the transmission belt 69 to rotate, thereby driving the transmission belt 69 to run. The transmission belt 69 drives the rotor shaft to rotate, and the detection device 8 performs symmetrical detection on the rotor shaft. The present detection device can also effectively detect automobile generator rotor shafts of different specifications. For example, when detecting a rotor shaft with a smaller diameter, after placing the rotor shaft on the fixing component 5, during the axial symmetry detection, the telescopic device 1 66 automatically adjusts the height of the arc plate 64 according to the pressure value detected by the pressure sensor 9, so that the transmission belt 69 fits tightly with the rotor shaft with a smaller diameter, ensuring that the transmission belt 69 can stably drive the rotor shaft to rotate, while ensuring that the pressure is within an appropriate range to avoid excessive pressure that damages the rotor shaft or insufficient pressure that causes the transmission belt 69 to slip. During the detection process, the detection device 8 completes the detection of the keyway symmetry and the axial symmetry of the rotor shaft itself in accordance with the same process as in Example 1.

[0035] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended only as examples and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. A device for detecting the symmetry of a rotor shaft and keyway of an automobile generator, characterized in that: including a base (1); The base (1) is provided with a moving part 1 (2) and a moving part 2 (3), wherein the moving part 2 (3) is mounted on the moving part 1 (2), and the two movers cooperate to realize two-dimensional displacement adjustment of the rotor shaft; The second moving part (3) is provided with a second mounting plate (4), and the second mounting plate (4) is symmetrically provided with a fixing part (5) and a driving part (6), the fixing part (5) is used to place and fix the rotor shaft, and the driving part (6) is used to drive the rotor shaft to rotate; The base (1) is provided with a detection device (8) for detecting the axial symmetry of the rotor shaft and the symmetry of the keyway; The second moving part (3) is provided with a positioning part (7) adapted to the first moving part (2) and the second moving part (3) for locking the displacement positions of the first moving part (2) and the second moving part (3).

2. The device for detecting the symmetry of a rotor shaft and keyway of an automobile generator according to claim 1, characterized in that: The movable part (2) includes a slide rail assembly (21), a movable table (23) and a protective cover (22), wherein the movable table (23) is arranged on the slide rail assembly (21) and can slide left and right, and the protective cover (22) is arranged outside the slide rail assembly (21) and covers it, and the slide rail assembly (21) and the protective cover (22) are both installed on the base (1); The second movable part (3) includes a second slide rail assembly (31), a second movable platform (33) and a second protective cover (32). The second movable platform (33) is arranged on the second slide rail assembly (31) and can slide forward and backward. The second protective cover (32) is arranged outside the second slide rail assembly (31) and covers it. The second slide rail assembly (31) and the second protective cover (32) are both installed on the base (1).

3. The device for detecting the symmetry of the rotor shaft and keyway of an automobile generator according to claim 2, characterized in that: The driving member (6) comprises: A fixed base plate (61), the fixed base plate (61) being mounted on the second mounting plate (4), and the fixed base plate (61) being provided with a telescopic device (66); An arc plate (64), wherein a plurality of pulleys (68) are rotatably provided on the arc plate (64), a transmission belt (69) is wound around the plurality of pulleys (68), and one of the pulleys (68) on the inner side of the transmission belt (69) is mounted on the arc plate (64) via a detection member (610); A connecting block (62) is movably mounted on the fixed base plate (61) and is rotatably connected to one end of the arc plate (64); The second connecting block (63) is movably arranged on the fixed bottom plate (61) and can be locked with the other end of the arc plate (64). A connecting frame plate (67) is provided between the first connecting block (62) and the second connecting block (63). The output shaft of the telescopic device (66) is connected to the connecting frame plate (67); A driving device (65) is provided on the connecting block (62), and an output shaft of the driving device (65) is connected to a pulley (68) at one end of a transmission belt (69).

4. The device for detecting the symmetry of a rotor shaft and keyway of an automobile generator according to claim 3, characterized in that: The fixed base plate (61) is provided with a movable groove (611) and a sliding groove (612), and a movable rod (631) is provided below each of the connecting block 1 (62) and the connecting block 2 (63). The connecting block 1 (62) is also provided with a sliding end (621), and the sliding end (621) is provided with a connecting plate 1 (622). The driving device (65) is installed on the connecting plate 1 (622), and its sliding end (621) is movable in the sliding groove (612).

5. The device for detecting the symmetry of the rotor shaft and keyway of an automobile generator according to claim 4, characterized in that: The detection member (610) includes an extrusion block (6101), a mounting bolt (6102) and a mounting base plate (6103), wherein the mounting bolt (6102) passes through the extrusion block (6101) and the arc plate (64) and is connected to the pulley (68), and the mounting base plate (6103) is arranged on the arc plate (64). A pressure sensor (9) is provided on the mounting base plate (6103), and one side of the extrusion block (6101) is located on the mounting base plate (6103).

6. The device for detecting the symmetry of the rotor shaft and keyway of an automobile generator according to claim 5, characterized in that: The positioning member (7) comprises: A second telescopic device (71), wherein the output shaft of the second telescopic device (71) is connected to a connecting member (72), and the second telescopic device (71) is arranged on a first movable table (23); A meshing plate 1 (73) and a meshing plate 2 (74) are symmetrically arranged, wherein the meshing plate 1 (73) and the meshing plate 2 (74) are both hinged to the connecting member (72); A limiting plate (75) is provided on the limiting plate (75), and a guide end (76) is provided on both symmetrical sides of the meshing plate 1 (73) and both symmetrical sides of the meshing plate 2 (74), and a guide groove (732) adapted to the guide end (76) is provided on both the meshing plate 1 (73) and the meshing plate 2 (74).

7. The device for detecting the symmetry of the rotor shaft and keyway of an automobile generator according to claim 6, characterized in that: The connecting member (72) includes a connecting plate 2 (721), a hinge plate 1 (723) and a hinge plate 2 (724). The connecting plate 2 (721) is provided with a hinge block 1 (722). One end of the hinge plate 1 (723) and the hinge plate 2 (724) are hinged to the hinge block 1 (722). The hinge plate 1 (723) and the hinge plate 2 (724) are symmetrically arranged. The other ends of the hinge plate 1 (723) and the hinge plate 2 (724) are hinged to the meshing plate 1 (73) and the meshing plate 2 (74) respectively.

8. The device for detecting the symmetry of the rotor shaft and keyway of an automobile generator according to claim 7, characterized in that: The base (1) is provided with a positioning plate 1 (103), the movable platform (33) is provided with a positioning plate 2 (331), the positioning plate 1 (103) and the positioning plate 2 (331) are both provided with an engaging tooth 1, and the engaging plate 1 (73) and the engaging plate 2 (74) are both provided with an engaging tooth 2 (731) capable of engaging with the engaging tooth 1.

9. The device for detecting the symmetry of the rotor shaft and keyway of an automobile generator according to claim 8, characterized in that: The movable table is provided with a mounting end portion (232), the telescopic device (66) is provided in the mounting end portion (232), and the movable table is also provided with a movable hole (233), the engaging plate (73) and the engaging plate (74) on the positioning member (7) are both located in the movable hole (233).

10. The device for detecting the symmetry of the rotor shaft and keyway of an automobile generator according to claim 9, characterized in that: The device further comprises a controller (11) and a control panel (12) provided on the detection device, wherein the controller (11) is connected to the driving device (65), the telescopic device 1 (66), the telescopic device 2 (71), the pressure sensor (9) and the control panel (12), wherein the telescopic device 1 (66), the telescopic device 2 (71) and the driving device (65) are all connected to an external power supply via the relay module (10), and the control panel (12) is also connected to an external power supply.

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